One Panel for One Motor?

You could reasonably use 1, 2, 3, 6, 9, or 18 panels, unless for some strange reason your local code prohibits multiple starters in a single panel.

Listen to Tornado.

Who is "we"?

Why not use an identity?

Then you will have a history and everyone can keep you separated from all the losers who use the anonymous poster name to hide behind.

This subject is getting repeated in this forum so many times.we have already given enough suggestions.

It depends on how you balance between ease of trouble shooting later on or you just want savings.

Making the panel individually has the ease to isolate wiring faults later on. Making it in one panel, later on when worst case happens say wiring burns on one motor, definitely has collateral effect on the other, and it's hard to trace given wires are organized in one bulk near the panel and other motors are online.

Anonymous posting should not be allowed.

As very often, we don't have enough information to give more than generic advice. It depends so much on real case conditions that it's simply impossible to magically provide you the right solution.

There are many options, single conventional panel, draw-out MCC, fully distributed with single motor protection and contactor next to each motor... Keep also in mind that you may need to install a safety switch close to each motor. Depending on the application you may need a separate emergency stop pushbutton in which case the safety switch will possibly not be exactly the same as without a red mushroom, etc.

Also regulations vary.

Even seemingly simple questions cannot be answered quickly, as always "it depends". That's also exactly why there are professionals specialized in their domain.

I agree with you but, we don't make the rules. By and large, this forum is great.

Anons are like a stone in your shoe. Some are just larger than others, but they're all a pain.

Indeed I don't worry that much about anonymous posters, I find it illogical to post anonymously as some who know won't care about replying. And to be completely honest, if I had to ask something I'd definitely be supposed to know maybe I'd be tempted to post anonymously too (haven't done it yet though). :)

Referring to the OP, if you're in Europe, EN standards let you a lot of freedom when it comes to the basic general architecture about motor control.

There are also various POV, some prefer to keep the number of cabinets limited but make sure the equipment is very well protected (high IP specs, if required heaters, heat exchangers or compressor cooling units) while others tend to try to distribute everything possible with the extreme examples of integrated VFD being part of the motor itself or field-installed motor starters.

Also communications play a role, even in true drawout MCC systems there are two approaches: conventionnal with discrete I/O interfacing and digital interfacing with fieldbus.

There are pros and cons for each concept and it isn't always easy to decide. Even experts don't necessarily agree. There are lots of factors to consider, including also future extensions and modifications.

Sometime it is very difficult to understand what they want us to help them by posting information that is not clear to understand.

He said, he got 18 motor and each is 7.5 KW. Are all these motors located at the same pace or different places?. If 18 of the motor are located at the same location I don't see why it cannot be done with one panel. Just install some push button and indication light and linked back all the wire back to the main control panel. That it.

If each motor are located at different location then you will need one panel for each motor ..It's that simple.

I politely disagree, it's not that simple.

For example if there would be 18 ATEX motors, maybe unless distances would be quite important, you'd probably not want to install 18 separate cubicles if all would be located in Ex zones.

There's no standard answer, there are too many factors to consider.

I assume this is for control only (no swiching bucket involved).

Space saving is not a recommended practice, and it is only more practical to use less space. Note that for six motors, you may be limiting your capacity for maintenance if one of the six gives a problem, so you need to cater for this in the design.

Also, six motors starting up simultaneously will be a substantial power draw on the supply, and you need to ensure the supply circuit can handle this, and that any drawdown in current will not affect other electrical apparatus on the same supply grid.

I believe that one panel for each motor will be a more expensive installation.

how could we assist you?

anonymous?

if you have 18 or more than that, you could make a single panel or you me divided in to balance your load, or depend upon your local code.

you can also provide a wired remote control panel if you like. so every motor has indevidual starten, then you make a single control panel for all motors.